ALT C4 "ABP"
This alarm triggers when the
boiler temperature probe reads
an over-heating of the boiler.
PROBABLE CAUSES ARE:
• Boiler contactor is closed or
blocked
• Boiler heating element earth
is missing
• Temperature probe is faulty/
damaged
CONSEQUENCES:
• Boiler is locked. To cancel the
alarm, press the CANC button
below the display
ALT GR11 "ABP"
This alarms triggers when group
1 temperature probe does not
read the heating/warming of the
group within a pre-set time of 5
minutes.
PROBABLE CAUSES ARE:
• Lack of one of the phases in
machine power supply
• Group 1 safety thermostat is
open
• Group 1 heating element is in-
terrupted
CONSEQUENCES:
• Boiler is locked. To cancel the
alarm, press the CANC button
below the display
ALT GR12 "ABP"
This alarms triggers when group
1 temperature probe is interrup-
ted.
PROBABLE CAUSES ARE:
• Group 1 temperature probe is
interrupted or disconnected
CONSEQUENCES:
• Boiler is locked. To cancel the
alarm, press the CANC button
below the display
ALT GR13 "ABP"
This alarm triggers when group
1 temperature probe has expe-
rienced a short circuit.
Probable causes are:
• Group 1 temperature probe is
faulty/damaged
• Group 1 temperature probe
connecting cable has experi-
enced a short circuit
CONSEQUENCES:
• Boiler is locked. To cancel the
alarm, press the CANC button
below the display
57